The objective of this study is the adaptation of the Pelvic Girdle Questionnaire to the French language from France, and the analysis of its psychometric properties. Firstly, a translation and adaptation process will be performed according to international guidelines. Secondly, the validation process will be performed through a sample of 250 pregnant or postpartum women suffering from pelvic girdle pain. They will fill several questionnaires, including Pelvic Girdle Questionnaire, that will allow us to analyse psychometric properties of the French version.

Inclusion Criteria:

• Women from 18 years-old, pregnant or having given birth less than one year earlier, with PGP whose onset occurred during pregnancy or within 3 weeks after birth. Registered in the French social security system.

Exclusion Criteria:

• Ovarian cysts, uterine fibroids, caesarean section (if subject in postpartum period), radicular pain below the knee, previous surgery on the spine, pelvis or lower limbs, vaginismus-type pelvic pain, spondylolisthesis, inflammatory diseases, prolapse, suspected serious pathology (weakness of the lower limbs, reflex changes or loss of sensation associated with the same spinal nerve), impossibility or difficulty in understanding the questionnaires and subjects needing guardianship/supervision.

Adult pregnant or in postpartum period females suffering of pelvic girdle pain. The symptoms must occur during pregnancy or within 3 weeks after childbirth.